Modular humic media filter, wastewater treatment system and treatment method

Abstract

The present application relates to sewage treatment technical field, and disclose a kind of modular humus filler filter tank, sewage treatment system and processing method, including by upper to lower interfitting after being communicated water tank, several groups of filter tank and water collecting tank, center tube assembly is equipped between water tank, several groups of filter tank and water collecting tank middle part, filter seat is also equipped with loose material assembly, blade rotating assembly is equipped in center tube assembly, loose material assembly inside end is extended to center tube assembly after closely adhering to rotating ring side edge on blade rotating assembly;The present application utilizes airflow kinetic energy to drive blade rotating assembly to rotate and link loose material assembly, without motor and other equipment, reduce operating cost and failure risk.Oxygen is supplied for microorganism, and loose material is also driven, so that air is diffused to humus filler layer, solve the problem of traditional filter tank "local oxygen supply uneven, microorganism activity difference is big", improve purification efficiency, solve odor problem simultaneously, and multifunctional integration is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to a modular humus filler filter tank, a sewage treatment system and a treatment method. BACKGROUND

[0002] The treatment of rural domestic sewage has become one of the key objects of attention in the rural environmental governance in China, and the governance has achieved initial success. However, compared with the treatment of urban domestic sewage, the treatment of rural domestic sewage is still in the initial stage in terms of both treatment coverage and perfection of treatment facilities.

[0003] In the field of sewage treatment, biological filters are widely used in the advanced treatment of domestic sewage and industrial wastewater due to their low cost and simple operation. The filter tank with humus as the core filler has become an important technical means for removing organic pollutants due to its good biocompatibility and adsorption performance. However, the existing humus filler filter tank and the matching treatment system still have the following outstanding problems in actual application:

[0004] The filler is easy to be cemented, and the filtration efficiency decays quickly:

[0005] Most of the humus fillers are in the form of particles, which are easy to be cemented due to water flow impact, microbial reproduction and suspended matter deposition in long-term operation, resulting in a decrease in the porosity of the filter layer and a reduction in the contact area between the wastewater and the filler. This not only reduces the efficiency of physical adsorption and biochemical reaction, but also causes problems such as filter clogging and increased water head loss.

[0006] In the prior art, the methods to solve the cementation problem are mainly manual regular loosening or mechanical stirring, which not only consumes labor cost, but also may cause filler loss due to excessive disturbance. In addition, the introduction of additional power equipment also increases the operating energy consumption.

[0007] The gas path design is unreasonable, and the oxygen supply and deodorization have poor synergy:

[0008] The activity of aerobic microorganisms depends on sufficient oxygen supply, and the aeration system of traditional filter tanks mostly adopts bottom gas distribution method, which has the problem of "local uneven oxygen supply". The upper part of the filter layer has sufficient oxygen, and the lower part is easy to form an anaerobic environment, resulting in large differences in microbial activity and affecting the overall treatment effect. In addition, hydrogen sulfide, ammonia and other odors will be generated during the filtration process of wastewater. The existing filter tank mostly has a separate deodorization device (such as an activated carbon adsorption tower), which is separated from the oxygen supply system, which not only increases the equipment cost, but also has problems such as gas path cross contamination and energy consumption superposition.

[0009] The power system is complex, and the operation cost is high:

[0010] The existing filter tank relies on independent motor, water pump and other power equipment for functions such as stirring and aeration oxygen supply, which not only has high equipment purchase cost, but also has energy consumption stacking problem. Especially in remote areas or unstable power supply scenes, the failure rate of power system is high, which seriously affects the continuous operation stability of the filter tank. Therefore, we introduce a kind of modular humus filler filter tank, sewage treatment system and treatment method. SUMMARY

[0011] The purpose of the present application is to provide a kind of modular humus filler filter tank, sewage treatment system and treatment method to solve the problems raised in the above background.

[0012] To achieve the above purpose, the present application provides the following technical solutions:

[0013] A kind of modular humus filler filter tank, including water tank, several groups of filter tank and water collecting tank connected by mutual assembly from top to bottom, center tube assembly is arranged in the middle between water tank, several groups of filter tank and water collecting tank, and the filter seat at the bottom of filter tank is provided with communication pipe assembly, and the communication pipe assembly is used to make the air inlet channel of the side edge of water tank, several groups of filter tank and water collecting tank and center tube assembly communicate;

[0014] The filter seat is also provided with a loosening assembly, and the center tube assembly is provided with a blade rotating assembly, and the inner side end of the loosening assembly extends into the center tube assembly and tightly abuts the rotating ring side edge of the blade rotating assembly;

[0015] When the center tube assembly is pumped by the fan, the external air is introduced into the filter tank through the air inlet channel and the communication pipe assembly, and the odor in the water collecting tank is discharged, and when the air flows upward in the center tube assembly, the blade rotating assembly is rotated, and the rotation of the blade rotating assembly drives the loosening assembly to reciprocate, forming the loosening operation of the humus filler in the filter tank.

[0016] Preferably, the upper end of the filter tank and the water collecting tank is provided with a splicing groove, and the bottom of the water tank and the filter tank is provided with a splicing protrusion, the splicing protrusion is inserted into the corresponding splicing groove, and the splicing of the water tank, several groups of filter tank and water collecting tank is realized.

[0017] Preferably, the air inlet channel includes vertical air inlet grooves opened on the side walls of the water tank, the filter tank and the water collecting tank, and hollow butt blocks provided at the lower ends of the water tank and the filter tank and communicating with the vertical air inlet grooves;

[0018] The hollow butt block is inserted into the corresponding vertical air inlet groove;

[0019] The inner wall of the filter tank is provided with a vertical limiting groove, and the bottom of the vertical limiting groove is provided with a plug-in hole communicating with the vertical air inlet groove.

[0020] The inner wall of the water collecting tank is provided with a slot communicating with the vertical air inlet slot.

[0021] Preferably, the communicating pipe assembly comprises communicating main pipes arranged in a circular pattern on the filter seat and communicating butt pipes arranged inside the ends of the communicating main pipes.

[0022] The inner side end of the communicating main pipe is connected with a plug-in ring which is inserted into the inner part of the end of the communicating main pipe, and the first reset spring is connected between the limiting ring and the plug-in ring.

[0023] The bottom corner of the filter tank is provided with a support block for supporting the filter seat, and the communicating butt pipe is inserted into the corresponding plug-in hole.

[0024] The upper end surface of the communicating main pipe is provided with a ventilation hole.

[0025] Preferably, the central pipe assembly comprises a top central pipe fixed in the center of the water adding tank by a connecting plate and a middle central pipe fixed through the middle part of the filter seat, the bottom of the top central pipe is inserted into the top of the corresponding middle central pipe, and the bottom of the middle central pipe is inserted into the top of the middle central pipe below.

[0026] The lower end of the top central pipe extends out through the filter plate at the bottom of the water adding tank.

[0027] The inner side end of the communicating main pipe communicates with the side edge of the corresponding middle central pipe.

[0028] Preferably, the loosening assembly comprises a light rod extending into the middle central pipe, a loosening plate arranged on the light rod, and a limiting cylinder fixed at the corner of the upper end of the filter seat.

[0029] The inner side end of the light rod is movably connected with a roller, the outer side end of the light rod is connected with a limiting disc after extending into the limiting cylinder, and the limiting disc is connected with a second reset spring inside the limiting cylinder.

[0030] Preferably, the middle central pipe is provided with an annular seat, two groups of bearings are arranged in the middle of the annular seat, and ventilation grooves are arranged in a circular pattern on the annular seat.

[0031] The vane rotating assembly comprises a rotating shaft extending through the two groups of bearings, first windward inclined vanes arranged in a spaced manner on the upper part of the rotating shaft, and second windward inclined vanes arranged on the first windward inclined vanes.

[0032] The rotating ring is fixed at the bottom of the second windward inclined vanes, a plurality of arc-shaped grooves are arranged in a spaced manner on the lower part of the rotating ring, and the roller is tightly attached to the lower part of the rotating ring.

[0033] Preferably, plastic particles are laid on the filter seat, and the humus filler is in the form of particles and laid on the plastic particles.

[0034] The application also provides a sewage treatment system of a modular humus filler filter tank, which comprises a filter box, an adjusting tank, the modular humus filler filter tank and an outlet channel connected in sequence, the filter box is connected to the adjusting tank by a drain pipe at the bottom, a water pump at the bottom of the adjusting tank is connected to a top annular water distribution pipe by a water diversion pipe, and the top annular water distribution pipe is located directly above a water adding tank.

[0035] The fan is connected to the top of the top center pipe, and the water collecting tank is connected to the outlet channel.

[0036] The application also provides a treatment method of the sewage treatment system of the modular humus filler filter tank, which specifically comprises the following steps.

[0037] S1, sewage is filtered by the filter box and then introduced into the adjusting tank, and then introduced into the water adding tank from the adjusting tank, the water diversion pipe and the top annular water distribution pipe, and the water adding tank uniformly distributes the sewage to the filter tank;

[0038] S2, the sewage flows through the filter tank in sequence by gravity, and pollutants are removed by physical adsorption of the humus filler and biochemical treatment of microorganisms;

[0039] External air is introduced into the filter tank through the air inlet channel and the connecting pipe assembly, and the odor in the water collecting tank is discharged, and the air flows upwards in the center pipe assembly, which drives the blade rotating assembly to rotate, and the rotation of the blade rotating assembly drives the loosening assembly to reciprocate, thereby loosening the humus filler in the filter tank;

[0040] S3, the sewage treated by the filter tank is introduced into the water collecting tank and the outlet channel in sequence.

[0041] Compared with the prior art, the application has the following beneficial effects: the application adopts a zero additional power loosening mechanism: the airflow kinetic energy drives the blade rotating assembly to rotate and drives the loosening assembly, without the need for a motor or other equipment, thereby reducing the operation cost and the risk of failure. The air path (air inlet channel) not only supplies oxygen to microorganisms, but also drives loosening, so that air is diffused to the humus filler layer from multiple points, solving the problem of uneven local oxygen supply and large differences in microbial activity in traditional filter tanks, improving the purification efficiency, and solving the odor problem, with high multifunctional integration. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a schematic diagram of the three-dimensional structure of the sewage treatment system of the application;

[0043] Figure 2 It is a schematic diagram of the exploded structure of the modular humus filler filter tank of the application;

[0044] Figure 3 Assembling structure diagram of filter groove of the present application;

[0045] Figure 4 Assembling structure diagram of filter seat and filter groove of the present application;

[0046] Figure 5 Assembling structure diagram of filter seat and filter groove of the present application;

[0047] Figure 6 Assembling structure diagram of filter seat and filter groove of the present application; Figure 5 Assembling structure diagram of filter seat and filter groove of the present application;

[0048] Figure 7 Assembling structure diagram of filter seat and filter groove of the present application;

[0049] Figure 8 Assembling structure diagram of filter seat and filter groove of the present application;

[0050] Figure 9 Assembling structure diagram of filter seat and filter groove of the present application;

[0051] Figure 10 Assembling structure diagram of filter seat and filter groove of the present application; Figure 8 Assembling structure diagram of filter seat and filter groove of the present application;

[0052] Figure 11 Assembling structure diagram of filter seat and filter groove of the present application; Figure 8 Assembling structure diagram of filter seat and filter groove of the present application;

[0053] Figure 12 Assembling structure diagram of filter seat and filter groove of the present application;

[0054] Figure 13 Assembling structure diagram of filter seat and filter groove of the present application;

[0055] Figure 14 Assembling structure diagram of filter seat and filter groove of the present application;

[0056] Figure 15 Assembling structure diagram of filter seat and filter groove of the present application;

[0057] Figure 16 Assembling structure diagram of filter seat and filter groove of the present application;

[0058] Figure 17 Assembling structure diagram of filter seat and filter groove of the present application;

[0059] Figure 18 Assembling structure diagram of filter seat and filter groove of the present application.

[0060] In the figure: 1, filter tank; 101, middle center pipe; 1011, annular seat; 1012, bearing; 1013, air permeation groove; 102, vertical limiting groove; 103, loose material plate; 104, plug-in hole; 105, supporting block; 106, filter seat; 107, communication butt joint pipe; 108, limiting cylinder; 109, communication main pipe; 1091, limiting ring; 1092, first reset spring; 1093, plug-in ring; 110, air permeation hole; 111, polished rod; 1111, limiting disc; 1112, second reset spring; 1113, roller; 112, second windward inclined blade; 113, rotating shaft; 114, rotating ring; 115, arc-shaped groove; 116, first windward inclined blade; 2, water collecting tank; 3, water adding tank; 301, connecting plate; 302, top center pipe; 303, filter plate; 4, top annular water distribution pipe; 5, water guide pipe; 6, water pump; 7, adjusting pool; 8, drain pipe; 9, filter box; 10, splicing protrusion; 11, hollow butt joint block; 12, vertical air inlet groove; 13, splicing groove; 14, grooving. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0062] Embodiment:

[0063] Please refer to Figures 1-18 The present application provides a technical solution:

[0064] A modular humus filler filter tank comprises a water adding tank 3, a plurality of groups of filter tanks 1 and a water collecting tank 2 which are connected in series after being spliced from top to bottom. The upper ends of the filter tanks 1 and the water collecting tank 2 are each provided with a splicing groove 13. The bottom of the water adding tank 3 and the filter tank 1 is each provided with a splicing protrusion 10 which is inserted into the corresponding splicing groove 13, so as to realize the splicing of the water adding tank 3, the plurality of groups of filter tanks 1 and the water collecting tank 2.

[0065] Advantages of the modular splicing structure:

[0066] The splicing of the splicing protrusion 10 and the splicing groove 13: the water adding tank 3, the filter tank 1 and the water collecting tank 2 are quickly spliced through the “protrusion-groove” plug-in, the number of filter tanks 1 (a plurality of groups of filter tanks 1 are connected in series) can be flexibly increased or decreased according to the sewage treatment capacity, and the modular humus filler filter tank is suitable for different sewage scenes (such as small communities) of different scales, so as to solve the problem of “fixed structure and difficult expansion” of the traditional filter tank.

[0067] The central pipe assembly is arranged between the water adding tank 3, the plurality of groups of filter tanks 1 and the water collecting tank 2;

[0068] The central pipe assembly comprises a top central pipe 302 centrally fixed on the upper end of the water adding tank 3 by a connecting plate 301 and a middle central pipe 101 fixedly penetrating the middle part of the filter seat 106, the bottom of the top central pipe 302 is inserted into the top of the corresponding middle central pipe 101, and the bottom of the middle central pipe 101 is inserted into the top of the middle central pipe 101 below;

[0069] The lower end of the top central pipe 302 penetrates and extends out through the filter plate 303 at the bottom of the water adding tank 3;

[0070] The inner side end of the communication main pipe 109 is in communication with the side edge of the corresponding middle central pipe 101.

[0071] The filter seat 106 at the bottom of the filter tank 1 is provided with a communication pipe assembly;

[0072] The communication pipe assembly comprises the communication main pipes 109 arranged in a circular shape at equal intervals on the filter seat 106 and the communication butt pipes 107 arranged inside the end of the communication main pipes 109;

[0073] The end of the communication main pipe 109 is internally provided with a limiting ring 1091 and a first reset spring 1092, the inner side end of the communication butt pipe 107 is connected with a plug-in ring 1093, the plug-in ring 1093 is inserted into the end of the communication main pipe 109, and the first reset spring 1092 is connected between the limiting ring 1091 and the plug-in ring 1093;

[0074] The support block 105 for supporting the filter seat 106 is arranged at the corner of the bottom of the filter tank 1, the support block 105 provides rigid support for the filter seat 106, so as to avoid deformation caused by the gravity of the filler;

[0075] The communication butt pipe 107 is inserted into the corresponding plug-in hole 104;

[0076] The elastic connection between the communication butt pipe 107 and the plug-in hole 104: the communication butt pipe 107 is connected with the first reset spring 1092 in the communication main pipe 109 through the plug-in ring 1093, and can automatically adapt the position of the plug-in hole 104 when the filter seat 106 is installed, so as to ensure the air path sealing;

[0077] The filter seat 106 moves downwards along the inside of the filter tank 1 until it is seated on the support block 105. In the process, the outer end of the communication docking pipe 107 slides downwards along the vertical limiting slot 102 until it is opposite the insertion hole 104. The outer end of the communication docking pipe 107 further extends out of the communication main pipe 109 under the elastic force of the first return spring 1092 acting on the insertion ring 1093 until the communication docking pipe 107 is inserted into the insertion hole 104. In this way, the communication main pipe 109 is in communication with the vertical air inlet slot 12 through the communication docking pipe 107.

[0078] When the PLC-controlled fan draws air through the top center pipe 302, a negative pressure is formed in the center pipe assembly (i.e., the top center pipe 302 and the plurality of middle center pipes 101 connected to the bottom of the top center pipe 302), thereby forming a negative pressure suction force in the communication main pipe 109 and the communication docking pipe 107 connected to the middle center pipe 101.

[0079] At this time, the negative pressure suction force causes external air to enter the center pipe assembly in sequence through the vertical air inlet slot 12 on the water addition tank 3, the hollow docking block 11 on the water addition tank 3, the vertical air inlet slot 12 on the filter tank 1, the communication docking pipe 107, and the communication main pipe 109, and finally be discharged through the top center pipe 302.

[0080] The suction force of the PLC-controlled fan is gradually reduced, allowing a portion of the external air entering the communication main pipe 109 to diffuse uniformly into the filter tank 1 through the air permeable holes 110 at the upper end of the communication main pipe 109 to supply oxygen to the aerobic microorganisms in the humus filler, under the action of the negative pressure suction force. After a period of oxygen supply, the suction force of the PLC-controlled fan is rapidly increased, causing the gas in the filter tank 1 to be drawn out under the strong negative pressure in the communication main pipe 109 and the center pipe assembly.

[0081] When it is necessary to disassemble the filter seat 106, the communication docking pipe 107 is pushed into the communication main pipe 109 until the first return spring 1092 is in a compressed state, and the communication docking pipe 107 is separated from the insertion hole 104. Then, the filter seat 106 is pulled upwards, which allows the filter seat 106 to be quickly installed and disassembled.

[0082] The filter seat 106 is laid with plastic particles, and the humus filler is in a granular form and laid on the plastic particles.

[0083] The upper end surface of the communication main pipe 109 is provided with air permeable holes 110.

[0084] The air permeable holes 110 at the upper end of the communication main pipe 109 are uniformly distributed, allowing air to diffuse from multiple points to the humus filler layer, solving the problem of "local uneven oxygen supply and large difference in microbial activity" in traditional filter tanks and improving the purification efficiency.

[0085] The communication pipe assembly is used for connecting the air inlet channels on the side of the water adding tank 3, the several groups of filter tanks 1 and the water collecting tank 2 and the central pipe assembly;

[0086] The air inlet channel comprises vertical air inlet grooves 12 formed on the side walls of the water adding tank 3, the filter tank 1 and the water collecting tank 2 and hollow butt joint blocks 11 arranged at the lower ends of the water adding tank 3 and the filter tank 1 and connected with the vertical air inlet grooves 12;

[0087] The hollow butt joint block 11 is inserted into the corresponding vertical air inlet groove 12;

[0088] The inner wall of the filter tank 1 is provided with a vertical limiting groove 102, and the bottom of the vertical limiting groove 102 is provided with a plug-in hole 104 connected with the vertical air inlet groove 12; the vertical limiting groove 102 limits the displacement of the communication butt joint pipe 107, and ensures the precision of the gas path connection.

[0089] The inner wall of the water collecting tank 2 is provided with a slotted groove 14 connected with the vertical air inlet groove 12.

[0090] The hollow butt joint block 11 is in sealed communication with the vertical air inlet groove 12: the adjacent tank bodies (the water adding tank 3 and the filter tank 1, the filter tank 1 and the water collecting tank 2) are inserted into the corresponding vertical air inlet grooves 12 through the hollow butt joint blocks 11, which not only ensures the gas path through, but also enhances the integrity after assembly, avoiding insufficient oxygen supply caused by air leakage.

[0091] The filter seat 106 is further provided with a material loosening assembly;

[0092] The material loosening assembly comprises a polished rod 111 penetrating into the middle central pipe 101, a material loosening plate 103 arranged on the polished rod 111 and a limiting cylinder 108 fixed at the upper corner of the filter seat 106;

[0093] The inner side end of the polished rod 111 is movably connected with a roller 1113, the outer side end of the polished rod 111 is connected with a limiting disc 1111 after penetrating into the limiting cylinder 108, and the limiting disc 1111 is connected with a second reset spring 1112 inside the limiting cylinder 108.

[0094] The precise linkage of the material loosening assembly: the cooperation of the arc-shaped groove 115 of the rotating ring 114 and the roller 1113 converts the circular motion into the linear reciprocating motion of the polished rod 111, and the stroke of the material loosening plate 103 is controllable (determined by the depth of the arc-shaped groove 115), which can effectively loosen the filler and avoid the filler loss caused by excessive agitation; the second reset spring 1112 ensures that the roller 1113 is always close to the rotating ring, ensuring the stability of the transmission.

[0095] The central pipe assembly is provided with a blade rotating assembly;

[0096] The middle center pipe 101 is internally provided with an annular seat 1011, the annular seat 1011 is internally provided with two groups of bearings 1012 arranged in an upper and lower manner, and the annular seat 1011 is provided with air-permeable grooves 1013 arranged in a circular and equidistant manner;

[0097] The blade rotating assembly comprises a rotating shaft 113 penetrating through the two groups of bearings 1012 arranged in an upper and lower manner, first windward inclined blades 116 arranged in an equidistant manner on the upper side of the rotating shaft 113, and second windward inclined blades 112 arranged on the first windward inclined blades 116.

[0098] The positioning effect of the annular seat 1011 and the bearings 1012 is to provide stable support for the rotating shaft 113, ensure the concentricity of the blade rotating assembly, and reduce the friction loss during rotation.

[0099] The rotating ring 114 is fixed at the bottom of the second windward inclined blades 112, and a plurality of arc-shaped grooves 115 are arranged in an equidistant manner on the lower side of the rotating ring 114, and the rollers 1113 are tightly attached to the lower side wall of the rotating ring 114.

[0100] When the air enters the communication main pipe 109 through the air inlet channel, and then enters the middle center pipe 101 through the communication main pipe 109, the air impacts the second windward inclined blades 112, so that the blade rotating assembly rotates clockwise;

[0101] When the air in the filter tank 1 and the water collecting tank 2 flows vertically upward through the center pipe assembly, until the air passes through the air-permeable grooves 1013 and impacts the first windward inclined blades 116, so that the blade rotating assembly rotates clockwise;

[0102] The energy of the air-driven blades is self-sufficient: the blade rotating assembly does not require additional power, and is driven only by air flow, reducing energy consumption; the double design of the first windward inclined blades 116 and the second windward inclined blades 112 increases the contact area with the air flow, ensuring that the blade rotating assembly can still rotate stably under low air flow intensity.

[0103] The inner side end of the loosening assembly extends into the center pipe assembly and tightly attaches to the side of the rotating ring 114 on the blade rotating assembly;

[0104] When the center pipe assembly is pumped by the fan, the external air is introduced into the filter tank 1 through the air inlet channel and the communication pipe assembly, and the odor in the water collecting tank 2 is discharged, and the air flowing upward in the center pipe assembly drives the blade rotating assembly to rotate, and the rotation of the blade rotating assembly drives the loosening assembly to reciprocate, forming a loosening operation on the humic filler in the filter tank 1.

[0105] When the air intake in the filter tank 1 is insufficient, the air charging pump controlled by the PLC can directly charge air into the middle central pipe 101 through the top central pipe 302, and the air is uniformly charged into the filter tank 1 through the air holes 110 after entering the communication main pipe 109, so as to supply oxygen for the aerobic microorganisms in the humus filler.

[0106] The application further provides a sewage treatment system of the modular humus filler filter tank, which comprises a filter box 9, a regulating tank 7, the modular humus filler filter tank and a water outlet channel connected in sequence, the filter box 9 is connected to the regulating tank 7 through a drain pipe 8 at the bottom, a water pump 6 at the bottom of the regulating tank 7 is connected to a top annular water distribution pipe 4 through a water guide pipe 5, and the top annular water distribution pipe 4 is located directly above a water adding tank 3.

[0107] A fan is connected to the top of the top central pipe 302, and the water collecting tank 2 is connected to the water outlet channel.

[0108] The application further provides a treatment method of the sewage treatment system of the modular humus filler filter tank, which specifically comprises the following steps.

[0109] S1, the sewage is filtered through the filter box 9 and then enters the regulating tank 7, and then is introduced into the water adding tank 3 from the regulating tank 7, the water guide pipe 5 and the top annular water distribution pipe 4, and the water adding tank 3 uniformly distributes the sewage to the filter tank 1;

[0110] S2, the sewage flows through the filter tank 1 by gravity in sequence, and the pollutants are removed through physical adsorption of the humus filler and biochemical treatment of the microorganisms;

[0111] The external air is introduced into the filter tank 1 through the air inlet channel and the communication pipe assembly, and the odor in the water collecting tank 2 is discharged, and the air flows upwards in the central pipe assembly, which drives the blade rotating assembly to rotate, and the rotation of the blade rotating assembly drives the loosening assembly to reciprocate, so as to form the loosening operation of the humus filler in the filter tank 1.

[0112] S3, the sewage treated through the filter tank 1 enters the water collecting tank 2 and the water outlet channel in sequence.

[0113] Detailed working principle:

[0114] The modular humus filler filter tank realizes sewage treatment through the synergistic mechanism of "modular assembly + air driving linkage + biological filtration", and the core process is as follows:

[0115] Sewage filtration path:

[0116] The sewage enters the water adding tank 3 through the top annular water distribution pipe 4, and is uniformly distributed to the lower filter tank 1 through the filter plate 303 at the bottom of the water adding tank 3.

[0117] Sewage flows through the granular humus filler (laid above the plastic particle layer) in the filter tank 1 under the action of gravity, and the sewage is purified by the physical adsorption (pore interception of pollutants) and microbial biochemical action (decomposition of organic matter) of the humus filler.

[0118] The treated sewage finally flows into the bottom collecting tank 2 and is discharged through the outlet channel.

[0119] Air circulation and loose material linkage mechanism:

[0120] When the fan draws air through the top center pipe 302, external air enters the air inlet channel (the external air flows through the vertical air inlet groove 12 on the water adding tank 3, the hollow butt joint block 11 on the water adding tank 3 and the vertical air inlet groove 12 on the filter tank 1 in turn), and then diffuses into the filter tank 1 through the communication pipe assembly (communication butt joint pipe 107, communication main pipe 109 and air permeable hole 110) to supply oxygen to the aerobic microorganisms in the humus filler;

[0121] At the same time, part of the air will enter the vertical air inlet groove 12 on the collecting tank 2 through the hollow butt joint block 11 on the bottommost filter tank 1, and finally enter the collecting tank 2 through the slot 14. At this time, the odor in the collecting tank 2 is discharged upward through the center pipe assembly to avoid odor accumulation.

[0122] Blade rotation and loose material operation: when the air flows upward in the center pipe assembly, it impacts the first windward inclined blade 116 and the second windward inclined blade 112 of the blade rotation assembly (when the air flow in the communication main pipe 109 flows into the middle center pipe 101, the air impacts the second windward inclined blade 112, and when the air in the middle center pipe 101 flows vertically upward, the air passes through the air permeable slot 1013 to impact the first windward inclined blade 116), which drives the rotating shaft 113 to rotate;

[0123] When the rotating shaft 113 rotates, the rotating ring 114 fixed to the bottom of the second windward inclined blade 112 rotates synchronously, the arc-shaped groove 115 at the lower part of the rotating ring 114 pushes the roller 1113 of the loose material assembly to reciprocate, and then drives the light rod 111 to extend and retract in the limiting cylinder 108 (the second return spring 1112 assists the return);

[0124] The loose material plate 103 on the light rod 111 moves integrally and reciprocally, loosens the humus filler in the filter tank 1, prevents the humus filler from being hardened, ensures the full contact between the sewage and the humus filler, and makes the air uniformly dispersed into the humus filler.

[0125] The present application utilizes the airflow kinetic energy to drive the blade rotation assembly to rotate and link the loose material assembly, without the need for motors and other equipment, thereby reducing the operation cost and the risk of failure. The present application realizes flexible adjustment of the filter tank size through the standardized splicing structure, and adapts to different treatment capacity requirements. The present application not only supplies oxygen for microorganisms through the air inlet, but also drives the loose material, and simultaneously solves the odor problem, with high multifunctional integration.

[0126] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous changes, modifications, substitutions and variations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A modular humic material filter, comprising a water supply tank, several sets of filter tanks, and a water collection tank assembled and connected from top to bottom, characterized in that: A central pipe assembly is provided in the middle between the water tank, several sets of filter tanks and the water collection tank. A connecting pipe assembly is provided on the filter seat at the bottom of the filter tank. The connecting pipe assembly is used to connect the air intake channel on the side of the water tank, several sets of filter tanks and the water collection tank with the central pipe assembly. The filter base is also provided with a loosening component, and the central tube assembly is provided with a blade rotating component. The inner end of the loosening component extends into the central tube assembly and is closely attached to the side of the rotating ring on the blade rotating component. When the central tube assembly is evacuated by the fan, outside air is introduced into the filter tank through the air intake channel and the connecting pipe assembly, and the odor in the water collection tank is drawn out. When the air flows upward in the central tube assembly, it will drive the blade rotating assembly to rotate. The rotation of the blade rotating assembly will drive the loosening assembly to move back and forth, forming a loosening operation on the humic filler in the filter tank. The loosening assembly includes a light rod extending through and into the central tube, a loosening plate on the light rod, and a limiting cylinder fixed at the upper corner of the filter seat; The inner end of the optical rod is movably connected to a roller, and the outer end of the optical rod extends into the limiting cylinder and is connected to a limiting plate. The limiting plate is connected to the second reset spring inside the limiting cylinder. The central tube in the middle is provided with an annular seat, and the annular seat is provided with two sets of upper and lower bearings in the middle. The annular seat is provided with ventilation grooves distributed in a circular and equally spaced manner. The blade rotation assembly includes a rotating shaft passing through two sets of upper and lower bearings, a first windward oblique blade equally spaced on the upper side of the rotating shaft, and a second windward oblique blade disposed on the first windward oblique blade. The rotating ring is fixed to the bottom of several sets of second windward oblique blades, and several sets of arc-shaped grooves are equally spaced on the lower side of the rotating ring. The roller is in close contact with the lower side wall of the rotating ring.

2. The modular humic filler filter according to claim 1, characterized in that: The upper end of the filter tank and the water collection tank are provided with splicing grooves, and the bottom of the water filling tank and the filter tank are provided with splicing protrusions. The splicing protrusions are inserted into the corresponding splicing grooves to realize the assembly of the water filling tank, several sets of filter tanks and the water collection tank.

3. A modular humic filler filter according to claim 1, characterized in that: The air intake channel includes a water tank, a filter tank, and a vertical air intake slot opened on the side wall of the water collection tank, as well as a hollow docking block connected to the vertical air intake slot at the lower end of the water tank and the filter tank. The hollow docking block is inserted into the corresponding vertical air inlet slot; The inner wall of the filter tank is provided with a vertical limiting groove, and the bottom of the vertical limiting groove is provided with a plug hole that communicates with the vertical air inlet groove. The inner wall of the water collection tank is provided with a slot that communicates with the vertical air intake slot.

4. A modular humic filler filter according to claim 3, characterized in that: The connecting pipe assembly includes a main connecting pipe distributed in a circular pattern at equal intervals on the filter seat, and a connecting connecting pipe disposed inside the end of the main connecting pipe. The end of the main connecting pipe is provided with a limiting ring and a first return spring. The inner end of the connecting pipe is connected to a plug ring, which is inserted into the end of the main connecting pipe. The first return spring is connected between the limiting ring and the plug ring. The bottom corner of the filter tank is provided with a support block for supporting the filter base, and the connecting pipe is inserted into the corresponding plug hole. The upper surface of the main connecting pipe is provided with vent holes.

5. A modular humic filler filter according to claim 4, characterized in that: The central tube assembly includes a top central tube fixed in the middle of the water tank by a connecting plate and a middle central tube fixed through the middle of the filter seat. The bottom of the top central tube is inserted into the top of the corresponding middle central tube, and the bottom of the middle central tube is inserted into the top of the middle central tube below it. The lower end of the top central tube extends through the filter plate at the bottom of the water tank; The inner end of the main connecting pipe is connected to the side of the corresponding central pipe.

6. A modular humic filler filter according to claim 1, characterized in that: The filter base is covered with plastic granules, and the humic filler is granular and laid on the plastic granules.

7. A wastewater treatment system, characterized in that: The filter includes a filter box, an equalization tank, a modular humic filler filter as described in any one of claims 1-6, and an outlet channel, which are connected in sequence. The bottom of the filter box is connected to the equalization tank by a drain pipe. The water pump at the bottom of the equalization tank is connected to the top annular water distribution pipe by a water inlet pipe. The top annular water distribution pipe is located directly above the water filling tank. The fan is connected to the top of the central pipe, and the water collection tank is connected to the water outlet channel.

8. A wastewater treatment method based on the wastewater treatment system of claim 7, characterized in that: Specifically, the following steps are included: S1. After being filtered by the filter box, the sewage enters the equalization tank. Then, it is introduced into the water filling tank from the equalization tank, the water inlet pipe and the top ring water distribution pipe. The water filling tank distributes the sewage evenly to the filter tank. S2. Wastewater flows sequentially through the filter tank by gravity, where pollutants are removed through physical adsorption by the humic packing material and biochemical treatment by microorganisms. Outside air is introduced into the filter tank through the air intake channel and connecting pipe assembly, and the odor in the water collection tank is drawn out. When the air flows upward in the central pipe assembly, it will drive the blade rotating assembly to rotate. The rotation of the blade rotating assembly will drive the loosening assembly to move back and forth, forming a loosening operation on the humic packing in the filter tank. S3. After being treated by the filter tank, the wastewater enters the collection tank and the outlet channel in sequence.

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